CN104273126B - A kind of bactericidal composition preventing and treating rice sheath blight disease - Google Patents
A kind of bactericidal composition preventing and treating rice sheath blight disease Download PDFInfo
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- CN104273126B CN104273126B CN201410512210.9A CN201410512210A CN104273126B CN 104273126 B CN104273126 B CN 104273126B CN 201410512210 A CN201410512210 A CN 201410512210A CN 104273126 B CN104273126 B CN 104273126B
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- oligosaccharide
- amino
- flutolanil
- sheath blight
- rice sheath
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Abstract
The present invention relates to a kind of bactericidal composition preventing and treating rice sheath blight disease, flutolanil is 20:1～1:5 with the mass ratio of amino-oligosaccharide.The described bactericidal composition containing flutolanil Yu amino-oligosaccharide, wherein effective active component content accounts for the 5～30% of gross weight, preferably 5～25%.Flutolanil used in the present invention belongs to two series bactericidal agents that the mechanism of action is different with amino-oligosaccharide, both will not produce antagonism at mutually mixture, in certain proportion, mixed synergies is notable, drug effect can be greatly improved, reduce Pesticide use amount and drug cost, the sheath blight fungus of the generation of jingganmycin is also had preferable prevention effect.
Description
Technical field
The present invention relates to a kind of pesticide synergistic compositions, a kind of bactericidal composition preventing and treating rice sheath blight disease.
Background technology
Flutolanil, chemical name: 3'-isopropoxy-2-(trifluoromethyl) benzanilide, is Nihon Nihyaku Co., Ltd's exploitation
New benzoyl for aniline fungicides, be the new medicament preventing and treating rice sheath blight disease at present, there is good drug efficacy, the preventing and treating time is long,
Energy Oryza sativa L. improves the feature of setting percentage.
Amino-oligosaccharide, chemical name is: low poly-D glucosamine, and the one that this medicine microorganism belonging to genus metabolism is extracted has anti-
The antibacterial of sick effect, the growth to some pathogenic bacteria has inhibitory action, and as affected fungus spore germination, induction hypha form occurs
Variation, the intracellular biochemical reaction of mycelia changes, and induction plant produces the mechanism of disease resistance and mainly excites plant gene table
Reach, produce and there are the chitinase of antibacterial action, glucanase, guarantor's element and PR albumen etc.；There is the gene table of suppression pathogenic bacteria simultaneously
Reaching, make the Physiology and biochemistry of mycelia morph, growth is suppressed, simultaneously can also stimulating growth.Amino-oligosaccharide is used at present
The preventing and treating of rice sheath blight disease has been reported.As Beiliu City, Guangxi plant protection unit, Guangxi District plant protection master station combine " the 5% amino widow delivered
The sugar element water preparation study on prevention to late rice banded sclerotial blight " result shows: 5% amino-oligosaccharide AS can promote germination neat,
Seedling growth, tiller and rice shoot root growth, reduce seedling-slowing stage and turn green the time, be 66.5% to rice sheath blight disease controlling effect,
Effect of increasing production reaches 10.6%.
Banded sclerotial blight is one of three big diseases of Oryza sativa L., and in South Rice Region of China, harm is particularly acute, and this disease makes Oryza sativa L. not ear, or
The hollow kernels of heading is more, and mass of 1000 kernel reduces, and the general underproduction 5%～10%, seriously up to 50%～70%.For many years, rice sheath blight disease is long
Phase relies on the single medicament such as jingganmycin, thiophanate-methyl to prevent and treat, and causes pathogenic bacteria to produce bigger Drug resistance.Base of the present invention
Characteristic in flutolanil and amino-oligosaccharide further study show that, the mixed agent of flutolanil and amino-oligosaccharide is used for rice banded sclerotial blight
Sick preventing and treating, has obvious potentiation, can reduce Pesticide use amount, have preventive effect higher, the advantage that mu is the lowest.
And there is presently no and flutolanil, amino-oligosaccharide are carried out mixture potentiation, for the relevant report of rice sheath blight disease controlling.
Summary of the invention
The technical problem to be solved is, it is provided that it is notable that one prevents and treats rice sheath blight disease potentiation, preventive effect is higher,
Cost is lower and can prevent disease from developing immunity to drugs or the pesticide synergistic compositions of delaying drug resistance speed.
The present invention solves above-mentioned technical problem and is adopted the technical scheme that: a kind of bactericidal composition preventing and treating rice sheath blight disease, fluorine
Amide is 20:1～1:5 with the mass ratio of amino-oligosaccharide.
The described bactericidal composition preventing and treating rice sheath blight disease, wherein effective active component content accounts for the 5～30% of gross weight, preferably
It is 5～25%.
The described bactericidal composition preventing and treating rice sheath blight disease, according to method known in those skilled in the art, adds corresponding additive
And solvent, filler, make any dosage form agriculturally allowed, the most such as: water dispersible granules, suspending agent, wettable powder.
The auxiliary agent used in the bactericidal composition of the present invention includes dispersant, wetting agent, antifreeze, defoamer, thickening agent, collapses
Solve agent, emulsifying agent, stabilizer, binding agent or other be of value to the material that effective ingredient is stable in the formulation and drug effect plays, all
It is conventional in pesticidal preparations or the various compositions of permission use.
The present invention has the following advantages and belongs to, with significant technique effect, flutolanil and amino-oligosaccharide, two classes that the mechanism of action is different
Antibacterial, both mutual mixture will not produce antagonism, and in certain proportion, mixed synergies is notable, it is possible to significantly carry
High-drug-effect, reduces Pesticide use amount and drug cost, the sheath blight fungus of the generation of jingganmycin is also had preferable prevention effect.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme and technique effect are described further, of the present invention hundred
Proportion by subtraction is all weight percentage.
Embodiments of the invention use the method that Toxicity Determination and field test combine.
Implementation of an application example one: flutolanil is compounding with amino-oligosaccharide to rice sheath blight disease Toxicity Determination
After prerun determines each medicament effective inhibition concentration scope, each medicament is set 5 dosage respectively and processes by active constituent content,
If clear water compares.Carry out with reference to " farm-chemical indoor determination test rule antibacterial ", use mycelial growth rate method to measure medicine
The agent virulence to rice sheath blight disease.Measure colony diameter by decussation method after 72h, calculate each process net growth, mycelial growth
Suppression ratio.Mycelial growth inhibition rate is converted into probit value (y), and liquor strength (μ g/mL) is converted into logarithm value (x), with
Little square law tries to achieve virulence regression equation (y=a+bx), and thus calculates the EC of every kind of medicament50Value.With being total to of the abundant method of Sun Yun
The potentiation of pharmacy mix evaluated by poison Y-factor method Y (CTC), i.e. CTC≤80 are antagonism, and 80 < CTC < 120 is phase
Adding effect, CTC >=120 are potentiation.
Actual measurement toxicity index (ATI)=(standard agent EC50/ reagent agent EC50)×100
B in the percentage composition+B medicament toxicity index × mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index × mixture
Percentage composition
Co-toxicity coefficient (CTC)=[mixture actual measurement toxicity index (ATI)/mixture theory toxicity index (TTI)] × 100
Result of the test is as shown in table 1:
Table 1 flutolanil, amino-oligosaccharide and the compounding toxicity test analysis of results table to rice sheath blight disease thereof
| Reagent agent | Proportioning | EC50(mg/L) | ATI | TTI | Co-toxicity coefficient |
| Flutolanil | / | 1.12 | 100 | / | / |
| Amino-oligosaccharide | / | 3.02 | 37.1 | / | / |
| Flutolanil: amino-oligosaccharide | 20:1 | 0.87 | 128.7 | 97.0 | 132.7 |
| Flutolanil: amino-oligosaccharide | 10:1 | 0.82 | 136.6 | 94.3 | 144.9 |
| Flutolanil: amino-oligosaccharide | 5:1 | 0.81 | 138.3 | 89.5 | 154.5 |
| Flutolanil: amino-oligosaccharide | 1:1 | 0.92 | 121.7 | 68.5 | 177.6 |
| Flutolanil: amino-oligosaccharide | 2:5 | 0.98 | 114.3 | 55.1 | 207.4 |
| Flutolanil: amino-oligosaccharide | 1:5 | 1.64 | 68.3 | 47.6 | 143.5 |
| Flutolanil: amino-oligosaccharide | 1:7 | 2.21 | 50.7 | 45.0 | 112.6 |
From the statistical analysis of table 1, flutolanil, the amino-oligosaccharide EC to rice sheath blight disease50Be respectively 1.12mg/L and
3.02mg/L.The virulence of amino-oligosaccharide is less than the virulence of flutolanil.Flutolanil and amino-oligosaccharide are in 20:1～1:5 scope
Interior mixture all shows obvious potentiation.When the mass ratio of flutolanil Yu amino-oligosaccharide is 1:7, co-toxicity coefficient is
112.6, show as summation action.
The implementation of an application example two bactericidal composition containing flutolanil and amino-oligosaccharide prevents and treats the field control effectiveness test of rice sheath blight disease
This experimental establishment is in Wuming County doube bridge town, Nanning, and test period is on October 20th, 2013, with flutolanil and amino
The former medicine of oligosaccharide according to method known in those skilled in the art, adds corresponding additive in the range of mass ratio is 20:1～1:5
And solvent, filler, make the mixture preparation of flutolanil amino-oligosaccharide as test medicine, with 20% flutolanil wettable powder
Agent (commercial), 5% amino-oligosaccharide water preparation (commercial) use identical application method, water consumption as comparison medicament, each community
It it is 45 kgs/acre.Investigating the rice sheath blight disease state of an illness before medicine, in the dispenser for the first time of state of an illness initial stage, every 7 days, dispenser once, was executed altogether again
Medicine 2 times.Within after last dispenser 7 days, 14 days, investigate rice sheath blight disease disease index respectively and calculate preventive effect.
Experimental result is as shown in table 2:
The table 2 bactericidal composition containing flutolanil and amino-oligosaccharide prevents and treats the field control effectiveness test of rice sheath blight disease
As can be seen from Table 2, the mixture preparation of flutolanil and amino-oligosaccharide is for the preventing and treating of rice sheath blight disease, and effect is substantially better than
Comparison medicament, reduces Pesticide use amount, effectively reduces mu originally, can effectively control the harm of rice sheath blight disease, tests medication
In the range of the growth of rice seedling is not had harmful effect.
Claims (3)
1. the bactericidal composition preventing and treating rice sheath blight disease, it is characterised in that effective ingredient is by flutolanil and amino-oligosaccharide group
Becoming, flutolanil is 10:1～1:5 with the mass ratio of amino-oligosaccharide.
The bactericidal composition preventing and treating rice sheath blight disease the most according to claim 1, it is characterised in that described flutolanil and ammonia
The content of base oligosaccharide accounts for the 5～30% of gross weight.
The bactericidal composition preventing and treating rice sheath blight disease the most according to claim 1, it is characterised in that described compositions is water
Dispersible granule, suspending agent or wettable powder.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276356A (en) * | 2011-07-11 | 2011-12-14 | 广西田园生化股份有限公司 | Stable controlled release particle pesticide-containing fertilizer |
| CN103314992A (en) * | 2013-07-02 | 2013-09-25 | 海南正业中农高科股份有限公司 | Insecticide acaricide taking oligose and macrolides composition as synergist and application of insecticide acaricide |
| CN103392737A (en) * | 2013-07-26 | 2013-11-20 | 海南正业中农高科股份有限公司 | Agricultural composition taking oligosaccharide and sulphur as synergistic components |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276356A (en) * | 2011-07-11 | 2011-12-14 | 广西田园生化股份有限公司 | Stable controlled release particle pesticide-containing fertilizer |
| CN103314992A (en) * | 2013-07-02 | 2013-09-25 | 海南正业中农高科股份有限公司 | Insecticide acaricide taking oligose and macrolides composition as synergist and application of insecticide acaricide |
| CN103392737A (en) * | 2013-07-26 | 2013-11-20 | 海南正业中农高科股份有限公司 | Agricultural composition taking oligosaccharide and sulphur as synergistic components |
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